The invention discloses a method for realizing butt joint of steel pipes by the aid of an axial cross plug board and a butt joint part. Two end of the cross plug board is embedded into steel pipe axial cross recesses at butt joint ends of the two steel pipes, the other ends, which are not embedded into respective the steel pipe axial cross recesses of the two steel pipes, of the cross plug boards are integrally in butt joint with angle steel, or at least one intermediate steel pipe is further serially connected between the butt joint ends of the two steel pipes. The two steel pipes are connected rigidly in a cross plug board butt joint mode, various internal force including axial force, bending moment, shearing force, torque and the like can be effectively transmitted, construction is carried out conveniently and safely, the steel pipes can be connected by bolts without welding an a field installation process, construction installation is carried out conveniently, the connection quality does not rely on the technical level of welding workers, fire hazards can be avoided due to a non-welding working mode, the method is wide in application range, multiple steel pipes in the same type can be axially connected in the cross plug board butt joint mode, and different types of steel pipes with different outer diameters, different section shapes, different wall thickness and the like also can be axially connected in the plug board butt joint mode.